Weighing and printing machine



A ril 30, 1929. G. F. HOCHRIEM 1,710,980

WEIGHING AND PRINTING MACHINE Filed May 13, 1927 2 Sheets-Sheet 2 o o o o o 0 O o O 0 O 0 J 2 mvsprroa ATTORNEY Patented Apr. 30, 1929.

rnass a GUSTAV-F. HOCHRIEM, OF CHICAGO, ILLINOIS, ASSIGNOR T RHODES-HOCHRIEM MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLI- NOIS.

Application filed ma 13,

This inventionfrelatcs 'to weighing and printing mecliaiiisnyand has for; i ts object.

the provision of means for insu ringaec u 1 te positioning of the printing wheel notwith- 6 standing unayoidable lost motion in the operating connections i I More particularly the" invention provides an improvement on the weighing and ticket: printingmaeh'ine described in my co-pendins 10 applieationSem' -N 135,316, filed Septe-Jmber 14," 1 92 6, the iiiipr'ovein'en t,"however, being adaptable to' other machines 'ofthe same general type. "-In weighing and ticket-printing machines suc h as described in my above-mentioned'a pplieation, the printin is accomplished by meansofa printing wheel carry ingon itsperipheryia series of numbers representingjthedifierent weights to belninted,

withfintermediate divisions showing fractions between the successive numbers. This print-in}; 'wh'e'el'is connected to the scale platform through a suitable operating mechanism embodying a rack and pinion so' as to be turned from its zero position through a partial rotation to an extent depending upon the-movement of the scale platform under the weight of the individual being weighed.

It highly important that themotion 'transmittin means, particularly the rack and pinion, be i reely' movable, as otherwise the resistance to movement will interfere with the accurate movement of the scale platform. as will be obvious. In order for the pinion to be freely movable it. is necessary that a certain amount of play be allowed in theteeth of the rack and pinion and as the printing wheel is mounted on ball bearings and is accurate] y balanced and of considerable weight, it tends to oscillate-through the are permitted by the play in the rack and pinion gear for a few moments before. coming to rest. and

may come to rest with either the driving side of the teeth or the reverse side-in contact.

As it is customary to provide printing wheels of scales of this kind with numbers running from zero {-0300, it only requires onesi. hundredth of. a revolution to make halt a pound difference in the weight printed on the ticket, and as a lost motion to this e.\'- tent is unavoidable in the gear connections. accuracy within smaller limits than one-half pound has heretofore been impossible.

ly the invention of this application this degree of arrm'acy is greatly increased while 'worl-zing against WEIGHIN G AND PRING IYIACHINE.

1927. Serial No. 191,242.

still allowing the. necessary lost motion'in the printing wheel connections to avoid resistance to the free movement of the scale beam.

In the aecompanyin drawings and following specification I lave shown and cleseri bed mr improvement applied to the print i ng and weighing mechanism disclosed in my.

atorenientioned co-opending application. In the said drawingsz.

l 1 1g. 1 is an elevational view of a printing and weighing mechanism with .my improvement attached, looking-from th'e're'ar;

.Fig. 2 is a. side elevation looking fie-m the;

right of Fig 1; and

he la ter described Referring to the drawings;particularly' Fig. 1, ed

Figs. 3 and 4 are detail views which will I is the scale "beainwvhich 15 supportoneend 1n knite l'iearings 28. and is sci cured at the other endto' 'th'e' lower enid "of spring 29. adjustably supported on a the zero or mini the scale bar, is determined by an adjusting screw 27 threaded a stop' 27" attached to the main plate 26 on wh mounted. The scale beam against the'tension of: the spring The .upper end of s ring 29' is bracket 2)"a1i d mum ve'ight position o f through the scale bar and;-

ieh the mechanism is 271s depressed by 'meansiof' a rod 12 connected with the scale plat form,

not shown.

-vTl e printing wheel 45 which is shown in F 1 is attached to the shaft -l in'onnted for tree rotation in ball bearings, one'of which is shown at 42 in Fig. 1. The shaft carries on its upper end a'pinion 41 meshing with a rack segment 38 mounted for oscillation on the bracl-ret 39 secured to the dotted lines. in

plate 26. The rack segment 38 has a down- \vardly extending arm or projection 37- to which is attached the so-called sealing bar 30 through the medium. otwhich the move? ment of the sea rack segment by means of a pin 3 5:cariied by the scale beam and :projected into an arcuate slot in the sealing bar.

The purpose of the ie beam 27 is transmitted to the sealing bar is to permiteaclrscal'e to be in- V dividnally ad usted for accuracy tlnoughout its entire. ran go of movement, this adjustmentbeing I of the slot of the sealing'har which bears on the pin to the. exact shape necessary to ellect a n equal movement of the. printing lever for each pound or" \veigl'it :nltlul to ihe scale accomplished bvfiling the upper edge ported onthe r shown in Fig.1,- ,The bracket E is turned B is threaded through one end or print the weightof the person onftheibea'm,

for the reason heretofore explained,namely, the oscillation of the printing wheel which may be 'caught by the printing hammer at the other offthe am litude of unavoidablein a mec ianism of movement this kind. ,l

The mechanism ofjthe present improve ment by which this defect is overcome com- ,prises a whey wheel A attached to the end of the she.

tall, the pulley wheel havinga deep peripheral groove for receiving a light cord B in such position that the cord is wound almost'completely around the pulley wheel when the scale is at its zero or minimum wei ht position. v A

T%1i 3 "cord B passesifromthe pulley wheel A to pulley C which'ismounted for. free 'rot'ation on'a. pin Dv carried by a bracket 13 supmain plate 26 inthe position outwardly at its lower end as shown at F and in the outwardly projecting end a hole is piercedin line with the pulley C. The cord t 1e hole in the part F and attached to the end of the ,cord is a weight G. The upper end of the bracket E is bent over the top of the pulley C to thereby hold the cord in place in the groove of the pulley.

The operation of the attachment is as fol lows: The weight G acting through the cord B tends to constantly turn the shaft 41 to the right or in a clockwise direction, as appears in Fig. 3, thereby holding the teeth of the pinion against the upper face of the teeth of the rack segment and also holding the upper edge of the slot in the sealing bar against the'pin 35 on the scale beam. The

value of the weight G is so proportioned with regard to the weight of the printing wheel as to quickly absorb the oscillation set up in the printi 0 wheel as the scale comes to rest, so that t e weight printed on the ticket will always be the weight corresponding to the position of the wheel with all the lost motion taken up in the manner. described.

By connecting the weight in the manner described to the shaft of the printing wheel,

.said printing wheel for the pull of the weight tending to move the wheel is the same in allfpositions of the wheel, and as there is substantially no frictional resistance to the movement of the cord, the scale, when once accurately adusted will remain so indefinitely.

I claim:

1. In a weighing and ticket-printing machine, a weighing mechanism comprising a member whose position is determined by the weighton the scale, a printing wheel, means i" or transmitting the motion of said member to the wheel compr sing a sealing mechanism having lost'motion therein, and means for 7 taking up lhe lost motion in the sealing mechanism when the parts come to rest.

2. In a weighing and ticket-printing m achine, a weighing mechanism comprising a member whose position is determined by the'S 'eight on thescale, a printing wheel, means fortransmitting the motion of said member to the wheelcomprising a sealing mechanism having co-acti'ng parts having rubbing contact, and means for contact rest.

when the printing wheel comes to 3. Ina weighing and ticket-printing ma} chine, the combination of a scale bar whose position is determined by the weight on the scale, a printing wheel, a pinion carried by said printing-wheel for actuatin 'same,a

rack meshing with said pinion an by said scale bar,

actuated Y a pulley attached a, said printing wheeleoaxially with said pinion, a

bracket attached to the frame of said machine at one side the axis of said printing wheel,

a. cord attached to said pulley,

a guide for said cord carried by said bracket, and a weight attached to said cord and tending to rotate said printing wheel in a direction to maintain the teeth of the pinion in contact with one face of the teeth of said rack. v 4.. In a \i 'eighing and ticket-printing machine, the combination on a position is determined by the weight of the scale, a printing wheel, a pinion carried by actuating the same, a rack meshing with said pinion and actuated by said scale bar, a pulley attached to said 1 printing wheel coaxially with said pinion, a cord attached to said pulley, a guide for said cord attached to the frame of said machine atone side of the axis of said printing wheel, and a weight attached to said cord and tending to rotate a direction to maintai ion in Contact. with one said rack.

In testimony whereof I affix my GUSTAV F. HOCHRIEM.

said printing wheel in the teeth of the pinfaee of the teeth of signature.

holding said parts in 85 scale bar whose 10? 

